Muffler.



UTE

s'rArn-s AT 1 :rosnrn A. :annnnrm Ann crmnnns A. xannnnn, or UTICA, new YORK.

onion.

MUFFLER.

Specification of Letters Patent.

Patented Jan. 3, 1911.

Application filed June 6', 1919. Serial No. 565,216.

To all whom it concern:

Be it known that we, JosnPH A. XARDELL and (Immune A. XARDELL, citizens of the United States, residing at Utica, in the county of Oneida and State of New York,

have invented certain new and useful Im-.

provements in Mufllers, ofwhich the followmg is a specification, reference belng had therein to the accompanying drawings.

Our invention relates to mufliers and we declare the following to be a full, cleapfi conelse and exact descrlption thereof, su to enable any one-skilled in the art to which it' appertains to make and use the same reference being had to the accompanying drawings in which iike reference characters refer p to like parts throughout the specification.

The object of the invention is to provide an eflicient mufiler which will receive the excient haust of an explosive engine and so disperse same that it will be sufficiently segregated and cooled, as to muflie or deaden the sound of the exhaust without producing any back pressure on the engine. i

The invention further contemplates certain improvements over a patent granted to us December 28, 1909, No. 944,646. The improvement embodies a tubular casing held in cylindrical form by rivets or other suitable means and having its ends closed by members provided with wedge sha ed peripheral t the runs or and by wedge buttresses adapted to closely edge of the tubular casin r1nciple force the respectlve rims or edge.

into a hermetically tight joint therewith.

Other objects will appear by referring to the drawings in wh1ch- Figure 1 is a longitudinal transverse section of the muffler; Fig.2 is a detail enlar ed showing more particularly the wedge eatime of the device; Fig. 3 is a detail viewenlarged showing a modified feature; Fig. 4 is also a detail view showin an edge or rim of the tubular casing to which has been applied or fitted an end member, the parts being in their relative positions just before the connecting rods of the device have been screwed down taut in assembled position; Fig. 5 isa detail view of an end member showing a side elevation partially in section.

Referring moreparticularly to the drawings the cylindrical casing is represented by 1 being constructed of suitable material and of proper length and diameter to accord with its function. The open ends ofcasing ll. are ciosed by end members a and 3 having screw mounted to a connecting link or other passage pipe. Members 2 and 3 are each provided with a circumferential peripheral wedge shaped flange 4 as described and are adapted to be assembled upon cylindrical casing 1, held in form by bolts or otherwise, and of smaller diameter than the diameter taken through any section above the lower portion 7 of wedge shaped flange 4. The end members 2 and 3 are assembled upon the respective open ends of cylindrical casing 1 by forcing said endmembers 2 and 3 down into the cylinder, so that wedge shaped fianges 4 of said end members 2 and 3 force out by leverage process the respective adjacent portions of cylindrical casing 1, in a flaring manner as shown clearly in Fig. 4. To completely assemble or seat end members 2 and 3 upon casing 1 or in other words to have rims 8 and 9 of the casing abut against shoulders 5 and 5* of end members 2 and 3 respectively contemplates the tightening of nuts 10 upon stay rods 11 of which there are a plurality in the device.

In Fig. 3 we show a'modification which embodies an annular circumferential inden tation or head 12 formed in the casing 13 at either end adjacent the lower portion 7 of wedge shaped or tapering flanges 4. Beads 12 are disposed at a distance from ends 8 and 9 of casing 13 depending upon the a little less than the flanges 4 in order to adapt the same-to fit snugly against or upon heads 12 when the parts are assembled. -The sides of the wedge shaped or tapering flanges 4 have a bearing on the casing 13 and thus making a hermetically metallic gas tight joint.

In Fig. 5 we shoyi more clearly end memher 3 having cast integral thereto a central circumferential inner wall 50 adapted to length of flanges 4. Usually the distance is" the ends 7 of the same have a bearing upon beads 12 thereby formlng a double bearing have its lower edge 51 seated upon the up disposed to port A by abutment 15 and prowere, by certain portions of the gas passing per surface of interior head 28 and having a plurality of apertures 52 to permit the passage of the gas.

The features of the device which are old and are more fully set forth'in our application above referred to are as follows: tubular member l4: of slightly larger diameter than the inlet port A and held concentrically vided with apertures as shown, tube 16-having lug 17 with es'capement orifices 18, cham er 19 provided with'apertures 20, tube 21 outside tube 14 and held concentrically disposed thereto by abutment 22, collar 23 provided with apertures in much the same manner as tube 21, disks or baffle-plates 24,- annular rings 25, transverse disk or partition 26, transverse disks or plates 27 having circumferential apertures the same as disk 26 but having central apertures of lessdiameter which is substantially the diameter of the central tube,'interior head 28 having an outer flange 29 to receive section oftubular member 31 bearing at one end on disk 32,- and tubular member GO'bearing at one end on disk 32 and at the other on inner head member 28 and held concentrically'disposed thereto by abutment E, all assembled and apertured as more fully described in the application referred to above. a

.The operation of the mufiEler is substantially as follows: The exhaust from the engine enters the inlet port A and expands into tubes 14 and 16, succeeding jets of the exhaust enter port A in the same manner and impinge against thebody of gas in said chamber. Immediately the jet of gas enters chamber 14 the jet is stripped, as it through openings 35. The main body of the jet impinges against the body of the gas in tubes 14 and 16, which acts as a spring column. The impact compresses the body of gas but deadens the force and the sound of the discharge of the exhaust. The recoil or expansion of the gas in tubes 14:" and 16, compressed under force of the impact'tends to urge the gas outjthrough openings 35 into the chamber formed by tube 21 which ciamber being much larger than that in tu e 14 there is a free and easy escape of the gas thereto without producing any back pressure on the engine.- From chamber 21 the gas expands outward into chamber formed by easing 1 by means of the numerous out lets'or apertures 36 provided for the purpose. In this latter chamber the gases are subjected to the cooling effect created by the atmosphere which is in contact with the outer surface of easing 1. From this last mentioned chamber the gases pass on through the openings 37 into collar 23 whence they pass through the straight openings 38 which provide ready passageways and are disposed around the central tube 16, 1

since the gases seek the passageway of least resistance. On reaching the end of this passageway the gases pass through-the wall of the cylinder into chamber 19. Since the gases contained in tubes 14 and 16 tend to expand toward the inlet they also expand at the opposite end and a .portion' passes through outlet 18 forming a small jet of gas which tends to relieve the pressure in chamber 14* formed of tubes 14 and 16 and to clear chamber 19, and also forms a suction to assist the gases in passing along the wall of tube 16 and into chamber 19 and through the same. After having passed throu h chamber 19, the gases pass through t e larger central passages or openings 39 until they reach the disk 32 which bars their fur-- ther advance and disperses them to the side. A. small central aperture 40 is provided,

however,. in disk 32 so that the passage of the gases will not be completely barred and thus a small jet will pass through aperture 40 to clear the chamber formed by tubular member 66. The eater portion of the gases comes into this chamber throu h the side walls and seeks a natural an easy egress through nozzle 41. Although niost of the gases pass from the space surrounding cylinder 21 as described, the peripheral apertures 43 in the several disks provide outlets for a portion pf the gas which escapes therethrough 'untilit comes to the chamber at the other end of the mufiler.be-'

tween casing 1 and cylinder 31 and between heads 3 and 28. The volume of gases which passes out through the opening 41being so much greater than that which passes throu h the small peripheral apertures 43 and t rough the outermost chamber an aspirating actionis formed which keeps the gas in the outermost chamber moving promptly, and results in a vacuum effect in said chamberand consequent eas communicating of the cooling influence o the outer casing 1 to the inner parts of the mufller Having thus described our lnvention what we claim as new and desire to secureby Letters Patent is:

1. In a muffler, the combination of end members provided with tapering flanges and one of said end members having a circumferential inwardly projecting wall, a casing adapted to be forced outwardly by said tapering'fianges whereby to make-hermetically air tight joints, substantially as described.

2. In a muffler of the character'described, the combination of end members provided with tapering wedge shaped flanges, one of said end members having cast integral therewith an inwardly projecting circumferential wall, a casing with annular beads-adjacent 'the ends thereof adapted to form'- seats for end portions of saidtaperingflanges, sub.

stantially as described.

3. In a device of the character described,

the combination of end members having peripheral wedge shaped flanges, one of said members provided with an inwardly projecting wall adapted to permit the passage of gas, and a cylindrical casing having at either end annular beads to form seats for the lower portions of said flanges, substan tially as described. I

4. In adevice of the character described, the combination of end members having peripheral wedge shaped means cast integral therewith and one of said members having also cast integral therewith an inwardly projecting wall adapted for the passage of gas, a cylindrical casing adapted to have its end portions pressed outwardly by said wedge shaped flanges, and said casing provided with annular beads adapted to form seats for the bottom portions of said wedge shaped flanges, substantially as described.

5. In a muflier of the character described, the combination of a chamber partitioned and apertured in a manner to adapt it to muflie and cool the exhaust of an engine, annular beads disposed near the ends of said casing forming said chamber, end men1- hers provided with circumferential flanges adapted to force said casing outwardly into a hermetically air tight joint, said annular beads adapted to form seats for the end portions of said flanges, and one of said end members having an inwardly projecting in ner wall adapted for the passage of gas, substantially as described.

6. In a mufiler, the combination of a casing in cylindrical form, end members provided with peripheral wedge shaped flanges adapted to force said casing outwardly and thereby form a hermetically gas tight joint, beads disposed adjacent the ends of said casing to form seats for the lower portions of said flanges, and one of said end members provided with an inwardly projecting wall adapted for the passage of gas, substantially as described.

7 In a mufller, the combination of a cylindrical casing having a given diameter, end members provided with peripheral tapering flanges, said flanges adapted to force outwardl y the end portions of said casing whereby to make a hermetically gas tight and metallic joint, and one of said end members having cast integral therewith an inwardly projecting wall adapted for the passage of gas, substantially as described.

8. In a device of the character described, the combination of end members having peripheral. wedge shaped means ada ted to force outwardly the end portions 0 a casing whereby to form a hermetically gas tight joint, and said casin having annular beads disposed adjacent its end portions whereby to form seats for the end portions of said flanges, and one of said end members having cast integral therewith an inwardly projecting wall, adapted for the passage of gas and to contact with an inner head member, substantially as described.

9. In a mufiler of the character described, the combination of end members having peripheral wedge shaped flanges, one of said members having an inner notched flange adapted to permit the passage of gas, a casing having annular beads at a given distance from its ends, said flanges adapted to force the ends of said casing outwardly in a flaring manner whereby there is formed a hermetically tight joint and said beads adapted to form seats for the bottom portions of said flanges, substantially as de scribed.

10. In a mufller, the combination of a chamber having a central passageway surrounded by an intermediate chamber, apertures from said central passageway to said intermediate chamber, an outer chamber, apertures leading from said intermediate chamber to said outer chamber, and members' provided with peripheral wedge shaped flanges adapted to force the side of said chamber outwardly in a flaring manner whereby hermetically as tight joints are secured, and an inner fependlng circumferential notched wall cast integral with one of said end members, said wall adapted for the passage of gas, and stay rods adapted to aid said flanges to press outwardly the side of said chamber and to hold said parts in as sembled position, substantially as described.

11. In a muflier, the. combination of a casing having annular beads disposed adjacent its end portions, end members cast with peripheral depending tapering flanges adapted to force the end portions of said casing outwardly in a flaring manner whereby to secure hermetically tight joints, and said casing having a central passageway surround ed by an intermediate chamber, apertures from said central passageway to said intermediate chamber, an outer chamber, apertures from said intermediate chamber to the outer chamber, and stay rods adapted to hold said parts in assembled position whereby the muifler will be hermetically sealed, substantially as described.

In testimony whereof we have hereunto atlixed our signatures in the presence of two witnesses.

JOSEPH A. XARDELL. CHARLES A. XARDELL.

Vitnesses J. M. VILBERT, T. L. IVILDER. 

